From 172a39d13c77bda27ac77535d1df45f85b751fcb Mon Sep 17 00:00:00 2001
From: Måns Rullgård <mans@mansr.com>
Date: Tue, 30 Dec 2008 03:13:52 +0000
Subject: ARM: work around linker bug with movw/movt relocations in shared libs

Originally committed as revision 16395 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/arm/asm.S              | 11 +++++++++++
 libavcodec/arm/h264idct_neon.S    |  9 +++------
 libavcodec/arm/simple_idct_neon.S |  3 +--
 3 files changed, 15 insertions(+), 8 deletions(-)

(limited to 'libavcodec')

diff --git a/libavcodec/arm/asm.S b/libavcodec/arm/asm.S
index e2595f4789..0aa1639998 100644
--- a/libavcodec/arm/asm.S
+++ b/libavcodec/arm/asm.S
@@ -18,6 +18,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "config.h"
+
         .macro require8, val=1
         .eabi_attribute 24, \val
         .endm
@@ -34,3 +36,12 @@
         .func   \name
 \name:
         .endm
+
+        .macro movrel rd, val
+#if defined(HAVE_ARMV6T2) && !defined(CONFIG_SHARED)
+        movw            \rd, #:lower16:\val
+        movt            \rd, #:upper16:\val
+#else
+        ldr             \rd, =\val
+#endif
+        .endm
diff --git a/libavcodec/arm/h264idct_neon.S b/libavcodec/arm/h264idct_neon.S
index 7f1c8eb8d0..6527390022 100644
--- a/libavcodec/arm/h264idct_neon.S
+++ b/libavcodec/arm/h264idct_neon.S
@@ -103,8 +103,7 @@ function ff_h264_idct_add16_neon, export=1
         mov             r1,  r2
         mov             r2,  r3
         ldr             r6,  [sp, #24]
-        movw            r7,  #:lower16:scan8
-        movt            r7,  #:upper16:scan8
+        movrel          r7,  scan8
         mov             ip,  #16
 1:      ldrb            r8,  [r7], #1
         ldr             r0,  [r5], #4
@@ -131,8 +130,7 @@ function ff_h264_idct_add16intra_neon, export=1
         mov             r1,  r2
         mov             r2,  r3
         ldr             r6,  [sp, #24]
-        movw            r7,  #:lower16:scan8
-        movt            r7,  #:upper16:scan8
+        movrel          r7,  scan8
         mov             ip,  #16
 1:      ldrb            r8,  [r7], #1
         ldr             r0,  [r5], #4
@@ -157,8 +155,7 @@ function ff_h264_idct_add8_neon, export=1
         add             r1,  r2,  #16*32
         mov             r2,  r3
         ldr             r6,  [sp, #32]
-        movw            r7,  #:lower16:scan8+16
-        movt            r7,  #:upper16:scan8+16
+        movrel          r7,  scan8+16
         mov             ip,  #8
 1:      ldrb            r8,  [r7], #1
         ldr             r0,  [r5], #4
diff --git a/libavcodec/arm/simple_idct_neon.S b/libavcodec/arm/simple_idct_neon.S
index e05c5fcb8b..e7099a221e 100644
--- a/libavcodec/arm/simple_idct_neon.S
+++ b/libavcodec/arm/simple_idct_neon.S
@@ -239,8 +239,7 @@ idct_coeff_neon:
         pld             [\data]
         pld             [\data, #64]
         vpush           {d8-d15}
-        movw            r3, #:lower16:idct_coeff_neon
-        movt            r3, #:upper16:idct_coeff_neon
+        movrel          r3,  idct_coeff_neon
         vld1.64         {d0,d1}, [r3,:128]
         .endm
 
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